spedigrees: Limestone varies in magnesium content. If you go to your local agricultural store--I am not sure what you have up there--and ask for “high mag limestone“--crushed or pulverized--they should be able to direct you. The analysis is always posted on the bag. Dolomitic limestone is generally “high-mag,” but perhaps other types of limestone have a high magnesium content. Our soils here in the northern Shenandoah Valley are very high in magnesium, and high mag limestone underlies a good portion of our soils, and high mag limestone is readily available. And, almost all the NS in this area look very nice, in spite of our hot, dry climate. As for soil acidity--that should not be a problem for Norway spruce, unless the soil is extremely acidic, maybe in the low 4’s. At my timberland, where the soils are a bit below 5, Norway spruce does very well. I am not sure what an optimum pH would be, and it would probably vary with soil type. Maybe somewhere in the 5.5 range is "safe." As for magnesium for Norway spruce--this has been fairly well documented. I titled my original post “a hypothesis,” but there is substantial evidence. A site factors study done at SUNY Syracuse some years ago now, noted that “at least 75 kg per hectare” is needed for good NS growth. Studies in Europe, where there has been extensive decline in NS forests, has shown that the acid rain causes a reduction in the availability of magnesium, and supplementing magnesium often solves the problem. And, I have made some personal observations--not scientific, and without all the facts--that magnesium supplementation can make a dramatic difference. But, the main effect of magnesium may not be in height growth, but in the fullness, density, and lushness of the foliage. I have seen many poor looking, thin foliaged NS trees growing reasonably fast in height. Also, the thin foliage on some Norway spruce trees has causes other than a lack of an optimum supply of magnesium. And, I know, some of that is genetic, and not correctable. As for your experiment: Yes, 5 years should be long enough to show some results, but no sooner. The limestone has to dissolve into the soil, get down to the roots, and, because NS hold their needles for several years, the "thickening" of the foliage may not be vis1ble for several years. BUT, and this is a big "but," the effect may not really show up on very young trees. It may help the growth rate, but as for foliage density, that is never really noticeable until trees are somewhat older and larger--maybe not until they are 20 feet tall or more will any difference be really clear. As for the growth rate: white pine usually starts growing faster than NS. How old are your trees? How tall? NS trees don't begin to grow fast until they are about 4.5 feet high, and that could be only after 6 to 8 years. At that point, they should "take off." On the best soils, and in the right climate, an average of 28 inches is possible, with some years the new shoots elongating up to 4 feet or more. But growth averaging 20 to 24 inches is good for many sites. Norway spruce and white pine, assuming equally good strains, should grow equally well over the first 50 years. The white pine up to about 18 years should outgrow the NS, but after that NS should catch up a bit. After 50 years NS should outgrow the white pine for some years. SUNY Syracuse did a growth curves study for NS, and found that for the first 60 years--after the trees reach 4.5 feet in height, there is no "curve" as such, but a straight line. White pine growth curves bend sharply over to the right after the first 18 years or so, and at 50 years the growth averages about 1 foot, while at the same age, NS trees can still be growing 28 inches per year. But this rate does begin to decline not too long after the 60-year mark. On the best sites both should eventually make 150 feet or more in forest stands. Open grown NS should make 120 feet or more on better sites. As for the blue spruce and magnesium, I really don't know. Tom may be right about this. --spruce

Where in the world are you? Do you have a Cooperative Extension Service office relatively close? There are many kinds of fungi, some good, some bad, and some indifferent. Part of composting involves fungi and part of growing plants involves fungi. Some fungi form mycorrhizal (mutually beneficial) relationships with plants. Burning organic matter produces a lot of pollution and is not a good means of curing any problem. Soils contain all kinds of bacteria and fungi, some that may even be disease pathogens. A person could solarize the soil and that may help with some disease pathogens for a time but they will return over time. Better is to concentrate on making that soil a good healthy soil that will grow strong and healthy plants. http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74145.html Start with a good reliable soil test for soil pH and major nutrient levels. These simple soil tests may also be of some help in determining what that soil needs. 1) Soil test for organic material. From that soil sample put enough of the rest to make a 4 inch level in a clear 1 quart jar, with a tight fitting lid. Fill that jar with water and replace the lid, tightly. Shake the jar vigorously and then let it stand for 24 hours. Your soil will settle out according to soil particle size and weight. For example, a good loam will have about 1-3/4 inch (about 45%) of sand on the bottom. about 1 inch (about 25%) of silt next, about 1 inch (25%) of clay above that, and about 1/4 inch (about 5%) of organic matter on the top. 2) Drainage. Dig a hole 1 foot square and 1 foot deep and fill that with water. After that water drains away refill the hole with more water and time how long it takes that to drain away. Anything less than 2 hours and your soil drains’ too quickly and needs more organic matter to slow that drainage down. Anything over 6 hours and the soil drains too slowly and needs lots of organic matter to speed it up. 3) Tilth. Take a handful of your slightly damp soil and squeeze it tightly. When the pressure is released the soil should hold together in that clump, but when poked with a finger that clump should fall apart. 4) Smell. What does your soil smell like? A pleasant, rich earthy odor? Putrid, offensive, repugnant odor? The more organic matter in your soil the more active the soil bacteria will be and the nicer your soil will smell, to a point. Too much organic matter can be bad as well. 5) Life. How many earthworms per shovel full were there? 5 or more indicates a pretty healthy soil. Fewer than 5, according to the Natural Resources Conservation Service, indicates a soil that is not healthy. 20 years of neglect means you will need a few, 3 to 5, years to get that soil into a good healthy condition, but it can be done. kimmq is kimmsr

I like the humorous approach to this serious subject. Maybe it will get people to do the right thing. It was just a couple of months ago that a young bear in Oregon had to be euthanized because he had become too friendly due to people feeding him for photo ops. Cute when it's a young bear, but dangerous when that bear is a full grown adult. Unfortunately, it usually ends badly for the wildlife when humans encourage these interactions. I've lived in wildlife habitat for 25 years, and while I very much enjoy seeing and observing wild animals such as deer, bears, foxes, coyotes and the occasional mountain lion, we respect their space and we never leave temptations such as trash or food outside.

Here's a random observation for the morning...I only took 2 cuttings this fall to try and root over the winter and both appear to have taken. After reading one of the other threads about biochar I took a handful of small chunks of burnt pine from the fireplace and mixed that into the soil when I planted them. That is the only new difference from all my other failed cuttings (I do not have a good success rate! These are #4 and #5 out of hundreds of attempts). It may or may not be what made them both work, but I thought it was interesting to note.